//
//  Collection.h
//  LearnObjectiveC
//
//  Created by client on 2017/9/9.
//  Copyright © 2017年 吴可高. All rights reserved.
//

#import <Foundation/Foundation.h>
@class Iterator;
@interface Collection : NSObject
@property(nonatomic,strong) Iterator * iterator;


-(NSObject*)getIndex:(int)idx;

-(int)size;

@end
